CVE-2026-40040
Pachno 1.0.6 Unrestricted File Upload Remote Code Execution
- State
- Published
- Severity
- 8.7 High
- Published
- Apr 13, 2026
- Updated
- May 12, 2026
- Reserved
- Apr 8, 2026
Description
Pachno 1.0.6 contains an unrestricted file upload vulnerability that allows authenticated users to upload arbitrary file types by bypassing ineffective extension filtering to the /uploadfile endpoint. Attackers can upload executable files .php5 scripts to web-accessible directories and execute them to achieve remote code execution on the server.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-434 Unrestricted Upload of File with Dangerous Type
Affected Products
| Product | Versions |
|---|---|
PachnoPachno |
|
References
- Zero Science Lab Disclosurethird-party-advisory
- VulnCheck Advisory: Pachno 1.0.6 Unrestricted File Upload Remote Code Executionthird-party-advisory
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